package cn.tedu.zhyl.wx.service.impl;

import cn.hutool.core.util.ObjectUtil;
import cn.hutool.http.HttpUtil;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import cn.tedu.zhyl.base.exception.ServiceException;
import cn.tedu.zhyl.wx.service.WeChatService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;

@Service
public class WeChatServiceImpl implements WeChatService {
    // 登录
    private static final String REQUEST_URL = "https://api.weixin.qq.com/sns/jscode2session?grant_type=authorization_code";

    // 获取token
    private static final String TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential";

    // 获取手机号
    private static final String PHONE_REQUEST_URL = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=";
    @Value("${zhyl.wechat.appId}")
    private String appid;
    @Value("${zhyl.wechat.appSecret}")
    private String secret;
    @Override
    public String getOpenid(String code) {
        Map<String,Object> requestParamMap = getAppConfig();
        requestParamMap.put("js_code",code);
        String result = HttpUtil.get(REQUEST_URL,requestParamMap);
        JSONObject jsonObject = JSONUtil.parseObj(result);
        if(ObjectUtil.isNotEmpty(jsonObject.getInt("errcode"))){
            throw new ServiceException(500,jsonObject.getStr("errmsg"));
        }
        return jsonObject.getStr("openid");
    }

    private Map<String, Object> getAppConfig() {
        Map<String,Object> map = new HashMap<>();
        map.put("appid",appid);
        map.put("secret",secret);
        return map;
    }

    @Override
    public String getPhone(String phoneCode) {
       String token = getToken();
       Map<String,Object> param = new HashMap<>();
       param.put("code",phoneCode);
       String result = HttpUtil.post(PHONE_REQUEST_URL+token,param);
        JSONObject jsonObject = JSONUtil.parseObj(result);
        if(jsonObject.getInt("errcde")!=0){
            throw new ServiceException(500,jsonObject.getStr("errmsg"));
        }
        return jsonObject.getJSONObject("phone_info").getStr("phoneNumber");
    }

    private String getToken() {
        Map<String, Object> map = getAppConfig();
        String result = HttpUtil.get(TOKEN_URL,map);
        JSONObject jsonObject = JSONUtil.parseObj(result);
        if(ObjectUtil.isNotEmpty(jsonObject.getInt("errcode"))){
            throw new ServiceException(500,jsonObject.getStr("errmsg"));
        }
        return jsonObject.getStr("access_token");
    }
}
